The incidence of malignant tumor is increasing year by year, which has become a common problem faced by human beings. Traditional treatment methods such as surgery, traditional chemotherapy and radiotherapy have always played a leading role in cancer treatment, but the effects of these treatments are limited. In particular, it is difficult for advanced patients to benefit from these treatments for a long time, nor can they fundamentally solve or change their quality of life. Therefore, researchers are increasingly focusing on the field of immunotherapy. Immunotherapy has brought new opportunities and hopes for the treatment of tumors, among which Immunocheckpoint inhibitors, therapeutic antibodies, tumor vaccines, immunomodulators, adoptive cell therapy, etc. Significantly improved the prognosis of cancer patients, and some patients with advanced cancer obtained long-term survival. In the past two years, many cellular immunotherapy have emerged and developed rapidly, which undoubtedly set off a wave of cancer treatment. So, is cell therapy reliable in treating cancer? In fact, immunotherapy has a history of more than 100 years, and it has only gradually entered the public’s field of vision in the last two years, and it has been absolutely recognized by the world oncology community.
A milestone in the history of cancer immunotherapy In 2013, Science magazine ranked the top ten scientific breakthroughs of the year, and immunotherapy topped the list. In recent years, immunotherapy is one of the hot spots in the research field of tumor treatment at home and abroad, and a large number of clinical studies have shown exciting results. Among them, Cellular immunotherapy uses the self-protection and killing ability of human immune system to achieve anti-tumor effect. Cells with immune function in patients are cultured and proliferated in vitro, and they are given the ability to attack tumor cells by technical means, and then they are imported into patients to realize their own anti-cancer. This therapyAgainst immune cells, not cancer cells.It is not as harmful to the patient’s health as surgery, radiotherapy and chemotherapy. Patients with early cancer can be treated directly, especially with the attack on residual cancer cells after surgery. Judging from the rapid development in scientific research and clinic in recent years, cellular immunotherapy is expected to become the fourth pillar of anticancer therapy in terms of accuracy, effectiveness and safety. Next, the small series of Cancer-free Home gives a general introduction and inventory of a variety of popular and emerging cellular immunotherapy in the biomedical industry, hoping to give cancer friends a general understanding of the general development process of this cancer treatment field.
0one CAR-T cell therapy
CAR-T therapy is chimeric antigen receptor T cell immunotherapy, which is a new precise targeted therapy for treating tumors. T cells are activated by genetic engineering technology, and the positioning navigation device CAR (tumor chimeric antigen receptor) is installed to transform the ordinary "warrior" of T cells into "super warrior" CAR-T cells, Specially identify tumor cells in vivo and kill tumor cells efficiently. So as to achieve the purpose of treating malignant tumors. At present, with 2021, Aquilencel injection, Regioscel injection. It was approved for listing in China, in 2022.Cedarchiorense was approved for listing by FDA.CAR-T therapy is expected to enter the blowout period. Indeed, CAR-T technology has shown good curative effect in many hematological tumors, such as leukemia, lymphoma and multiple myeloma, and more than half of hematologic cancer patients who are on the verge of despair and have no cure have achieved good curative effect.
CAR-T cell therapy has been listed at home and abroad at present.
Although the clinical effect of CAR-T therapy on solid tumors is not satisfactory, and it has even been sung down by some people, in recent years, CAR-T therapy has made outstanding progress in the fields of gastric cancer, liver cancer and pancreatic cancer. Scholars at home and abroad have made various modifications to CAR-T, and constantly found new targets for the treatment of various solid tumors.
Clinical study on CAR-T therapy is out of the loop.
0one Gastric cancer and pancreatic cancer As the first CAR-T cell targeting Claudin18.2 in the world, CT041 emerged as early as the ASCO annual meeting in 2019. At that time, the total objective remission rate was 33.3%, which already surprised the world. Now the more remarkable curative effect is undoubtedly the icing on the cake! This clinical data shows a good treatment prospect for digestive system tumors!
Domestic CAR-T therapy CT041 first appeared in ESMO
Developed by Keji Pharmaceutical at the annual meeting of the European Society of Oncology (ESMO) in 2021.Targeting Claudin18.2(CLDN18.2)Autologous CAR-T candidate productsCT041Showing its presenceDigestive system tumorThe outstanding curative effect can be described as brilliant!
The research data is particularly eye-catching!
1. All patients’The objective remission rate was 48.6%, and the disease control rate was 73%.All patients with gastric cancerThe total objective remission rate was 57.1%.
2. Patients with gastric cancer who failed to receive at least 2 lines of treatment in the past:The objective remission rate was 61.1%, and the disease control rate was 83.3%.
3. And the overall tolerance is good!
As of March 3, 2022,CT041 became the first and only CAR-T cell candidate product in the world for the treatment of solid tumors, which entered the confirmatory phase II clinical trial.This is a milestone for CAR-T to conquer the solid tumor field. Congratulations!
In addition, there are many CAR-T cell therapies targeting CLDN18.2.0 2 liver cancer At present, the clinical trial targets of CAR-T in the treatment of liver cancer are mainlyGPC3 (phosphatidylinositol proteoglycan 3). The breakthrough research results completed by Professor Zhai Bo, director of the Department of Tumor Interventions, Renji Hospital affiliated to Shanghai Jiaotong University School of Medicine, were published in the international authoritative journal Clinical Cancer Research on May 5, 2020. By July 24th, 2019, 13 patients had received CAR-GPC3 T cells with a median value of 19.9×108. All the patients are GPC3 positive, and they have received surgical treatment, local treatment or systemic treatment, and they all carry hepatitis B virus (HBV). Two patients achieved partial remission (PR). The 6-month, 1-year and 3-year survival rates of all patients were 50.3%, 42.0% and 10.5% respectively, and the median survival time (OS) was 278 days (39.7 weeks). At the ASCO annual meeting in 2021, Chinese medical researchers published the latest clinical research data of CAR-T drug targeting GPC3 (Ori-CAR-001) in the treatment of recurrent/refractory hepatocellular carcinoma for the first time. As of March 10, 2021, a total of 11 recurrent subjects who received cell infusion were included.All the subjects had advanced hepatocellular carcinoma, and none of them were effective after chemotherapy, TACE (transcatheter arterial chemoembolization) and targeted therapy.Of the 9 evaluable subjects,4 cases achieved partial remission (PR), 3 cases achieved disease stability (SD) and 2 cases developed disease progression (PD).The objective remission rate was 44%, and the disease control rate reached 78%..
02 Treatment of tumor infiltrating lymphocytes (TIL)
TILs therapy, simply speaking, is to separate and purify the lymphocytes in the tumor tissue after surgery, select the lymphocytes that can specifically resist cancer, and then amplify and activate them and reinfusion them. This kind of therapy has a history of more than 30 years, and it was first used for malignant melanoma. In recent years, it has given good data in many solid tumors such as cervical cancer and lung cancer.
This therapy is equivalent to pulling back veterans with combat experience directly from the battlefield. After a round of "political review" and "big competition" in professional ability, the spies and traitors are eliminated as far as possible, leaving the ones with the strongest fighting capacity, providing supplies, and then sending them back to the battlefield to continue fighting. Looking at the whole industry, the voice of "innovative therapy based on Tiles cells LN-144 (Lifelecel) is expected to be approved in 2022" is particularly loud. Tiles therapy, as an "ancient" cell therapy, is expected to usher in the first approved product this year, and its great potential in treating solid tumors can not be underestimated, with strong strength and relatively "out of the circle". TILs domain key node event In 1982
Steven A.Rosenberg and others discovered for the first time that TILs can inhibit the metastasis of melanoma cells in patients.
1988
The earliest attempt of TILs in clinical treatment: TILs therapy for metastatic melanoma achieved an objective remission rate of 60%.
In 2011
Steven A.Rosenberg and others published a phase II clinical research data in Clinical Cancer Research: the objective remission rate (ORR) and complete remission rate (CR) of patients with melanoma treated by TILs were 56% and 24% respectively.
In 2012
Melinda Bachini, a patient with advanced intrahepatic cholangiocarcinoma, is called the first patient to achieve complete remission (CR) after TILs therapy.
2019
At the ASCO meeting, the clinical results of innovative therapies LN-145 and LN-144(Lifileucel) based on TILS cells in the treatment of cervical cancer and melanoma have attracted wide attention in the medical field.FDA awarded LN-145 breakthrough therapy recognition.
In 2021
Phase I clinical results of TILs cell therapy at AACR meeting: among 12 evaluable patients.Non-small cell lung cancer patientsMedium,TIL therapy can achieve a total remission rate of 25%, among whichTwo patients achieved lasting complete remission.
In 2021
At the annual meeting of tumor immunotherapy association (SITC), the clinical research results of LN-145 in the treatment of metastatic non-small cell lung cancer (mNSCLC) showed that in 28 cases,In patients with recurrent/refractory mNSCLC,After LN-145 monotherapy,The overall remission rate (ORR) was 21.4%(1 case of CR and 5 cases of PR, including 2 cases of PD-L1 negative tumors), 12 cases were stable, and the disease control rate (DCR) was 64.3%.
03 TCR-T therapy
CAR-T cells and TCR-T cells belong to T cells modified by genetic engineering technology.Compared with CAR-T therapy, TCR-T therapy has unique advantages in the field of solid tumor treatment. TCR-T cell therapy can identify tumor-specific antigens from cell membrane surface or intracellular sources, and has entered clinical application from the initial basic immune research, showing initial efficacy in solid tumors, and has become the most likely T cell immunotherapy to make a breakthrough in the field of solid tumors!
1、 TCR-T cell therapy in China has been approved for clinical use and has become a potential new therapy for HBV-related hepatocellular carcinoma!
At present, in addition to the global TCR-T in full swing in the research and development and clinical verification stage, China is also constantly breaking through innovation.
On December 22nd, 2021, CDE (Drug Evaluation Center) official website was able to inquire about the clinical application of "SCG101 Autologous T Cell Injection", which is a TCR-T cell therapy for specific hepatitis B virus (HBV) epitopes and a potential new therapy for HBV-related hepatocellular carcinoma (HCC).
▲ Image source: CDE official website
2、 Advanced liver cancer ushered in a new dawn! TCR-T therapy makes cancer patients completely relieved.
As early as 2020 International Hepatology Conference (ILC), ADP-A2AFP, a new TCR-T therapy for liver cancer based on T cells, caused quite a stir, and also made a new breakthrough in the new therapy for liver cancer.
Among the included patients,One patient showed a complete remission (CR) in cancer progression, and the AFP of the other participants also decreased to varying degrees.This means that the experiment has made progress, and it also shows that this therapy is effective for the treatment of advanced liver cancer.
All the 9 patients involved had undergone surgery and conventional radiotherapy and chemotherapy, but failed or became intolerant. Among the 4 patients who received the highest dose of treatment,One patient achieved complete remission, and CT scan showed that all the lesions in the patient disappeared, and it has lasted for more than half a year without any recurrence!
The best response of other patients (cohort 1, cohort 2) is stable. 1 patient in queue 2After one month of treatment, the volume of the primary lesion did not decrease, but the volume of mediastinal lymph node metastasis decreased obviously!
Therefore, TCR-T therapy targeting AFP (alpha-fetoprotein) can kill tumor cells expressing AFP. Based on the positive results of this study, researchers are expected to expand the maximum dose to 5 billion cells, and we look forward to the publication of updated data of this study!
04 CAR-NK therapy
In recent two years, in addition to CAR-T therapy, another new cancer cell therapy- Natural killer (NK) cell therapy It has also gradually attracted attention. The researchers said, NK cell As a cell anticancer therapy, it has more potential, and it may be safer, cheaper and faster. CAR-NK is to add a chimeric antibody to NK cells by genetic engineering that can recognize tumor cells and activate NK cells to kill tumor cells at the same time.
one The first "spot" CAR-NK clinical trial in China was approved by the Food and Drug Administration. On November 11, 2021, National Medical Products Administration Drug Evaluation Center passed an independent research and development in China. Mesothelin (MSLN) chimeric antigen receptor NK cells (CAR-NK) injection for the treatment of advanced epithelial ovarian cancer. Application for clinical trial of CAR-NK injection. According to the cancer-free home, This product is the first "spot" CAR-NK product of foreign origin in China. This also marks a new milestone in the research of immune cell drugs in the treatment of solid tumors in China!
2 The 1-year survival rate doubled, and the curative effect of CAR-NK therapy in solid tumor increased sharply.
Recently, the journal Clinical Oncology Research published a phase II clinical trial for lung cancer. Heat shock protein 70(Hsp70) is highly expressed in about 70% of middle and advanced lung cancer. NK cells are activated by Hsp70 in vitro, which is equivalent to making NK cells meet their future enemies in vitro, "making enemies" first, and then returning them to patients, so that NK cells can formally fight with cancer cells in vivo. This method of stimulating NK cells with antigen peptides in vitro and giving them certain specificity is a hot topic in recent years.
A total of 16 patients with stage III non-small cell lung cancer were enrolled in this clinical trial. One group received traditional chemotherapy combined with radiotherapy and chemotherapy, and the other group received chemotherapy combined with Hsp70 pre-stimulated NK cell reinfusion.
The results show that:The one-year survival rate can be doubled from 33% to 67% by Hsp70 pre-stimulated NK cell reinfusion therapy combined with traditional radiotherapy and chemotherapy, and the preliminary results are encouraging.
Next, Xiaobian shows a typical successful case in combination therapy, as shown in the figure:After 1~2 months of treatment, the lung tumor completely disappeared and the curative effect has been maintained for 18 months.
In addition to the above-mentioned clinical studies at home and abroad, CAR-NK cells also have a good effect on glioblastoma and neuroblastoma, specifically recognizing and killing breast cancer cells with high efficiency, and have a remarkable effect on multiple myeloma.
05 Dendritic cell vaccine
Cancer vaccine is a form of immunotherapy, which can prevent cancer from developing or kill existing tumors by stimulating or restoring the human immune system. Dendritic cell (DC) vaccine is a new biological therapy for malignant tumor in recent years, which has been paid more and more attention and recognized by oncologists. As an important member of the human immune defense system, Dendritic cells have the strongest antigen presenting function and are known as "sentinels" of the immune system. It is named because its cells extend outward with many dendritic protrusions. It mainly uses modern high-tech biotechnology to collect the peripheral blood of tumor patients, induce and cultivate a large number of dendritic cells in a short time in vitro, and equip them with immune cells that patients do not have, so as to accurately "target" and kill cancer cells. Not only that, It can also induce immune memory in patients, so that patients can obtain long-term anti-cancer effect.
DCVAC/LuCa is a dendritic cell vaccine developed by the United States for patients with non-small cell lung cancer.In a study on the first-line treatment of advanced lung cancer announced at the ASCO conference in 2019, DCVAC/LuCa vaccine combined with chemotherapy groupThe objective remission rate is 45%,The median overall survival time was 15.5 months, and the median progression-free survival time was 6.74 months.Reduce the risk of death by 46%!
In the Phase II clinical study of the latest novel dendritic cell vaccine DCVAC/LuCa (lung cancer dendritic cell vaccine) combined with standard carboplatin/pemetrexed in the treatment of advanced non-squamous cell (nsq) non-small cell lung cancer in 2022,The 1-year survival rate was 72.73% and the 2-year survival rate was 52.57%.By the time the data was published, the median overall survival time had not been reached. The median progression-free survival time was 8.0 months, and the objective remission rate was 31.82%.
Prostate cancer-Provenge vaccine
Provenge is the first vaccine approved for treatment in the United States, which initiated a new era of cancer immunotherapy.This is an autologous cell immunotherapy, which was approved by FDA on April 29, 2010 to treat asymptomatic or mild mCRPC. This approval marks the success of 20 years of unremitting efforts.In the United States, Provenge is the only FDA-approved immunotherapy for prostate cancer made from patients’ own immune cells.
Ovarian cancer-dcvac/ovca vaccine
At the 50th annual meeting of the Society of Gynecological Oncology (SGO) in 2019, the final result of SOV02, a phase II clinical trial, was announced: DCVAC/OvCa, an immunotherapy based on dendritic cells, was added to standard carboplatin and gemcitabine schemes for patients with recurrent, platinum-sensitive and epithelial ovarian cancer.It can prolong the overall survival (OS) of patients with advanced recurrent ovarian cancer by more than one year.andDCVAC/OvCa reduced the death risk of second-line treatment of ovarian cancer by 62%. The overall survival (OS) increased significantly by 13.4 months. The median progression-free survival rate (mPFS) increased by 1.8 months. The global phase III study will be launched soon.
Melanoma-TLPLDC vaccine
The subgroup analysis results of the phase IIb clinical trial of TLPLDC vaccine in the treatment of melanoma were published at the ASCO-SITC Clinical Immunooncology Conference in 2020.
In that population analysis follow the clinical research protocol (PT), compared with the comfort unit,The 24-month disease-free survival rate in TLPLDC treatment group was significantly improved (62.9% vs 34.8%), indicating that the relative risk of disease recurrence was reduced by nearly 50%.
In the population analysis of Intentional Treatment (ITT),There was no significant improvement in 24-month disease-free survival between TLPLDC treatment group and placebo group (38.5%) vs 27%），But in this analysis,The improvement trend of 24-month overall survival rate (OS) was stronger (86.4% vs 75.1%)..
Kidney Cancer-Ilixadencel Vaccine
Ilixadencel is an allogeneic dendritic cell (DC) vaccine. Research shows that,Ilixadencel combined with targeted anticancer drug sunitinib(Sotan, common name: sunitinib)First-line treatment of newly diagnosed advanced metastatic renal cell carcinoma（mRCC）Compared with patients treated with sunitinib alone, the total remission rate is doubled, the complete remission rate is higher and the remission is more lasting!
Glioblastoma-AV-GBM-1 vaccine On June 8, 2021, well-known foreign biomedical companies announced the release of phase II clinical trial data of their personalized cancer vaccine AV-GBM-1. The research shows that this new vaccine has great potential for prolonging the overall survival of newly diagnosed glioblastoma patients in the medium term. The median progression-free survival time of patients was 10.4 months, which was about 50% higher than the median progression-free survival time of 6.9 months in the landmark STUPP study, and established a nursing standard for newly diagnosed glioblastoma patients. Non-small cell lung cancer-tedopi vaccine
On April 1st, 2020, a new anti-cancer vaccine, TEDPI, achieved positive results in the phase III clinical trial of non-small cell lung cancer. After the immune checkpoint inhibitor (PD-1) was resistant or failed, all patients in the group used TEDPI vaccine in the second or third line, and the overall survival rate for one year reached 46%, far exceeding the preset 25%!
A 54-year-old patient with advanced lung cancer has rapidly shrunk (from 39mm to 23mm) after five injections of the new lung cancer vaccine. At the time of reporting, his survival time has exceeded 20.6 months, and he is still being followed up.
06 CIK cell therapy
CIK cells, that is, Cytokine-Induced Killer (CIK), are a new type of immunocompetent cells, which have strong proliferative ability and cytotoxicity, and have certain immune characteristics. Because this cell expresses both CD3 and CD56 membrane protein molecules, it is also called NK cell (natural killer cell)-like T lymphocyte, which has both the strong anti-tumor activity of T lymphocyte and the non-MHC-limited anti-tumor advantage of NK cell. If NK cells are the "first line of defense" to protect human health, then CIK cells are undoubtedly the "precision missiles" to kill tumor cells. Especially for patients after surgery or radiotherapy and chemotherapy, it can eliminate residual tiny metastatic lesions, prevent cancer cells from spreading and recurring, and improve immunity. Therefore, CIK cells are considered as the first choice for a new generation of adoptive cellular immunotherapy for tumors. Research progress of representative CIK cell therapy
nasal pharyngeal cancer
Among 137 patients with nasopharyngeal carcinoma treated by CIK, 50% of them improved their survival time by 6-9 months, and among 137 patients treated by CIK, 50% of them delayed their tumor progression by 6-7 months.
liver cancer
Among the 819 patients with liver cancer treated by CIK, 50% of them improved their survival time by 13~25 months, and among the 819 patients treated by CIK, 50% of them delayed their tumor progression by 4~7 months.
ovarian cancer
Among 72 patients with ovarian cancer treated by CIK, 50% of them have improved their survival time by 24 months. Among 72 cases of ovarian cancer treated by CIK, 50% of ovarian cancer patients delayed their tumor progression by 14.5 months.
carcinoma of colon
Among 126 patients with colon cancer treated by CIK, 50% of them have a longer survival time of 30 months. Among 126 patients with colon cancer treated by CIK, 50% of them delayed their tumor progression by 14.5 months.
breast cancer
The probability that the survival time of 150 breast cancer patients treated with CIK can reach 5 years is increased to 85.7%; The probability of keeping breast cancer from recurring in 150 breast cancer patients treated with CIK within 5 years increased to 72.3%.
Solid tumor
Of the 31 patients treated with PD-1 antibody combined with DC-CIK, 2 patients’ tumors completely subsided and 5 patients’ tumors partially subsided. Of the above 7 patients, 6 patients’ effects can be maintained for 5 months. The tumors of the other 13 patients remained stable.
renal carcinoma
Among 43 patients with advanced renal cell carcinoma treated by CIK, 50% of them can delay the tumor progression to 14.7 months.
07 CAR-M therapy
In recent years, the study of macrophages has also been paid attention to by the industry. How to activate the anti-tumor activity of these macrophages is the direction that immunologists have been working hard. CD47, an immune checkpoint on macrophages, has become a very promising hot target in the field of tumor immunotherapy.
In a recent study published in Nature Biotechnology, researchers from perelman Medical College of the University of Pennsylvania and other research institutions may have an alternative to T cell therapy to overcome these challenges. Their research shows that genetic modification of macrophages (an immune cell that devours intruders in vivo) may be the key to developing effective cell therapy for solid tumors. They were able to confirm these genetically modified expressions. The macrophages of CAR (CAR-M) can kill tumors in human samples and mouse models in the laboratory and prolong their life.
CAR-M therapy is centered on macrophages, which devour invading cells instead of destroying them like T cells. T cells are more like Space Invaders games, while macrophages are more like Pac-Man games. Another major difference between macrophages and T cells is that they are the first responders of the body to virus infection. Historically, this poses a challenge in trying to genetically modify them to attack cancer, because macrophages are not easily transfected by standard viral vectors used in gene therapy and cell therapy.
In this experiment, the research team used genetic engineering technology to transform macrophages. They not only expressed CAR targeting HER2 antigen, but also were activated and differentiated into M1 macrophage types that promoted inflammation. In this way,These CAR-M cells can not only target tumor cells, but also change the microenvironment near tumors by secreting pro-inflammatory cytokines. They can also present tumor antigens to T cells and activate T cells’ immune response to tumors, which can be described as "killing three birds with one stone".
On March 18th, 2021, Carisma Company of the United States announced the completion of the first drug delivery to the subjects of CAR-M therapy (CT-0508) targeting Her2, marking a new era of CAR-M transformation therapy for solid tumors. In a word, taking macrophages as effector cells transformed by CAR is expected to reverse the tumor inhibitory microenvironment, so as to break through the obstacles of immune cell therapy in solid tumors.
08 CTL (cytotoxic T lymphocyte) therapy
What cell therapy can be used as an adjuvant therapy for the majority of patients with inoperable advanced cancer? In recent years, researchers have been developing new immunotherapy schemes for these patients, including CTL(cytotoxic T lymphocytes) technology. This technology mainly uses protein, which is unique to cancer cells and has no or low content in normal cells, as bait to select the truly anticancer lymphocytes in peripheral blood, and then further improve and amplify them in vitro, and then return them to patients. MTCA-CTL immunotherapy is a new generation of biological immunotherapy model introduced in China. While ensuring the expansion of non-MHC-restricted killer NK-T cells, directional expansion of HC-restricted CD8＋+specific CTL cells can make its proportion in cell products reach 60% ~ 70%. The combined effect of this killer cell makes the efficiency of killing tumor cells higher.
At present, the multi-target compound antigen peptide biological immunotherapy technology, which is undergoing the second phase of clinical trials in the Cancer Hospital of China Academy of Medical Sciences, is the fifth and brand-new generation of cellular immunotherapy technology, which can optimize the activation method of DC (dendritic cells) to enhance the killing effect of immune cells on tumor cells. At present, it has achieved good clinical results and I believe it will really benefit cancer patients.
【Mainly suitable for solid tumors.】Head and neck tumor, esophageal cancer, lung cancer, gastric cancer, breast cancer, liver cancer, membranous adenocarcinoma, colorectal cancer, ovarian cancer, uterine cancer, coma cancer, prostate cancer, malignant melanoma, sarcoma and partial malignant lymphoma.
If economic conditions permit and you want to consult MTCA-CTL therapy, you can contact.Cancer-free Home Medical Department (400-626-9916), a detailed assessment of the condition.
09 CAR-NKT therapy
Natural killer T cells (NKT) are a group of special T cell subsets that express both T cell receptors (TCR) and NK cell receptors on the cell surface, and can produce a large number of cytokines. Such as IL-4 and INFγ. These cells can not only directly dissolve and kill tumor cells, but also play an anti-tumor role through indirect ways (secreted cytokines, activated immune cells, etc.). Recently, a phase I clinical trial jointly conducted by Baylor Medical College in Houston and Texas Children’s Hospital is evaluating a new treatment for children with recurrent neuroblastoma –CAR-NKT cell therapy is expected to break through this bottleneck. Phase I trial, code-named GINAKIT2, used CAR-NKT cells for the first time to treat recurrent neuroblastoma. Eleven children (1~21 years old, with an average age of 7 years old) were all recurrent/refractory high-risk neuroblastoma, with extensive metastasis and no better treatment plan in clinic. The results are very encouraging: Of the 11 advanced patients, The condition of 4 patients was stable, 2 patients achieved partial remission (tumor was obviously reduced), and one of them had complete remission (CR) after receiving the second CAR-NKT cell infusion. In safety, CAR-NKT is safer than CAR-T therapy. No dose-limiting toxicity was observed in the first 28 days after infusion.
10 Compound immune cell therapy
This technology will alsoSix kinds of cells, such as γδT cells, NK cells, NKT cells, killer T cells, dendritic cells and helper T cells.Activate, multiply 10 million to 20 million cells to 2 billion to 5 billion cells, and then inject them into patients. Cultivating such important immune cells at the same time greatly improves the therapeutic effect compared with single treatment.
Except for some leukemia and malignant lymphoma,It can be used for the treatment of most cancers, and has a good effect in refractory cancer types and advanced cancers. Besides,Compound immune cells also play a great role in improving immunity and strengthening the body.
Xiaobian has something to say
In recent years, due to the development of medical level, new cancer treatment methods have appeared one after another, among which cellular immunotherapy is in full swing, which brings new hope to cancer patients. According to the latest statistics, compared with patients with advanced lung cancer, gastric cancer and liver cancer who only receive surgery, radiotherapy and chemotherapy, adjuvant cellular immunotherapy can prolong the survival time of patients and significantly improve the data effect. In fact, tumor treatment is actually a complex "project", and it is difficult to achieve good results by relying solely on a certain treatment method. Tumor treatment needs the cooperation of various treatment methods to achieve the final victory in the fight against cancer.
