市場調查報告書
商品編碼
1516707
TCR 療法的全球市場管道Global Tcr Therapy Market Pipeline |
TCR療法(T細胞受體療法)是一種創新的免疫療法,利用人體自身的免疫系統來對抗癌症。在這種方法中,患者的 T 細胞被提取並表達專門設計用於識別並結合腫瘤細胞上 MHC(主要組織相容性複合物)所呈現的癌症相關抗原的受體。
與針對細胞表面抗原的 CAR-T 療法不同,TCR 療法可以針對細胞內蛋白質,從而能夠針對更廣泛的癌症。經過改造後,T 細胞會在實驗室中擴增並重新註射到患者體內,在那裡它們會尋找並摧毀癌細胞。TCR 療法在治療包括實體腫瘤在內的各種癌症方面顯示出前景,目前正在進行廣泛的研究以優化其療效和安全性。
全球 TCR 治療市場成長的主要驅動力
根據美國癌症協會預測,2023年美國將新增1,958,310例癌症病例,609,820人死亡。癌症發生率的上升凸顯了對更有效治療方法的迫切需要,將 TCR(T 細胞受體)療法推向了前沿。隨著全球癌症發病率飆升,對 TCR 等創新療法的需求不斷增長,這種療法利用免疫系統來針對癌細胞。
隨著越來越多的患者被診斷出患有各種形式的癌症,TCR 療法的市場自然會擴大,以解決這些不同的適應症。這一趨勢證明了 TCR 療法的多功能性及其滿足癌症患者不斷變化的需求的潛力,使其成為腫瘤學領域的關鍵參與者。
隨著越來越多的患者需要先進的治療方案,TCR 療法專門針對癌細胞的能力使其成為有前景的解決方案。TCR療法對多種癌症類型的適用性進一步增加了其吸引力,使其成為持續對抗癌症的關鍵要素,並為癌症治療提供了充滿希望的未來前景。
全球TCR治療市場的主要成長限制因素
需要適當的 HLA 匹配,因為 T 細胞受體 (TCR) 只能識別肽-HLA 複合物,並且對 HLA 等位基因匹配的癌細胞有效。這意味著非中國來源的TCR-T細胞不能直接應用於中國患者。識別具有最佳親和力閾值的 TCR 的篩選過程具有課題性,因為需要高親和力 TCR 來增強免疫反應。
鑑定對抗原具有高親和力的 TCR 對於有效的免疫反應至關重要,但必須仔細調節這種親和力。當 TCR 親和力超過生理極限時,T 細胞可能會受傷。
表達TCR的T細胞辨識抗原的機制對於T細胞免疫至關重要。T 細胞必須對病原體呈現的抗原做出定量反應,同時不對宿主組織上的類似抗原做出反應。
TCR療法|概述
T 細胞受體 (TCR) 的預選庫由遺傳因子和表觀遺傳因子共同決定。根據可及性假說,基因片段必須能夠被重組機制所訪問,其中涉及核重排、DNA甲基化、染色質重塑、組蛋白修飾和種系轉錄等過程。
最近的分析表明,框架外 TCR-a 序列的頻率受到 V 和 J 片段使用的影響,表明存在遺傳影響。此外,在胸腺選擇之前,重組偏差會促使同基因小鼠的 TCR-B 鏈庫出現顯著冗餘,突顯透過 V(D)J 重組顯著塑造 TCR 庫組成的傾向。
全球 TCR 治療市場的主要參與者
我們提供 10% 免費客製化和 3 個月的分析師支援。
常見問題(FAQ):
答:TCR 療法包括從患者體內提取T 細胞,對它們進行基因改造,使其表達能夠識別癌症相關抗原的特定T 細胞受體(TCR),然後將這些經過修飾的T 細胞注射到患者體內,透過重新接種疫苗來發揮作用。然後,這些經過修飾的 T 細胞會瞄準並殺死表現出特定抗原的癌細胞。
答:TCR 療法的常見風險和副作用包括細胞激素釋放症候群 (CRS)、神經毒性和可能損害健康組織的脫靶效應。這些副作用需要在治療期間和治療後仔細監測和管理。
答:TCR療法和CAR-T療法都是對T細胞進行基因修飾,但其標靶辨識機制不同。CAR-T細胞透過嵌合抗原受體辨識癌細胞上的表面抗原,而TCR療法則針對MHC分子呈現的細胞內抗原。這使得 TCR 療法能夠靶向更廣泛的癌症相關蛋白。
TCR therapy, or T-cell receptor therapy, is an innovative form of immunotherapy that leverages the body's own immune system to combat cancer. This approach involves extracting a patient's T-cells and genetically engineering them to express receptors specifically designed to recognize and bind to cancer-associated antigens presented by the major histocompatibility complex (MHC) on tumor cells.
Unlike CAR-T therapy, which targets antigens on the cell surface, TCR therapy can target intracellular proteins, allowing for a broader range of cancer targets. Once engineered, these T-cells are expanded in the laboratory and reinfused into the patient, where they seek out and destroy cancer cells. TCR therapy holds significant promise for treating various cancers, including solid tumors, and is currently the focus of extensive research to optimize its efficacy and safety.
Key enablers of the global TCR therapy market growth:
According to the American Cancer Society, the United States is projected to see 1,958,310 new cancer cases and 609,820 cancer deaths in 2023. The rising incidence of cancer underscores the urgent need for more effective treatments, propelling TCR (T-cell receptor) therapy into the forefront. As cancer rates surge globally, the demand for innovative therapies like TCR, which harnesses the immune system to target cancer cells, is increasing.
With more patients being diagnosed with various forms of cancer, the market for TCR therapy naturally expands to address these diverse indications. This trend showcases the versatility of TCR therapy and its potential to meet the evolving needs of cancer patients, positioning it as a significant player in the field of oncology.
As more patients require advanced therapeutic options, TCR therapy's ability to specifically target cancer cells positions it as a promising solution. Its adaptability across different cancer types enhances its appeal, making TCR therapy a crucial component in the ongoing battle against cancer and a key factor in the future landscape of oncology treatments.
Key growth restraining factors of the global TCR therapy market:
T-cell receptors (TCRs) can only recognize peptide-HLA complexes and are effective against cancer cells that have matching HLA alleles, necessitating appropriate HLA matching. This means that TCR-T-cells derived from non-Chinese individuals cannot be directly applied to Chinese patients. The screening process for identifying TCRs with the optimal affinity threshold is challenging, as high-affinity TCRs are needed to enhance immune responses.
Identifying TCRs with high affinity for antigens is crucial for effective immune responses, but the affinity must be carefully regulated. If TCR affinity exceeds physiological limits, it can result in injury to the T-cells.
The mechanism of antigen recognition by TCR-expressing T-cells is vital for T-cell immunity. T-cells must quantitatively respond to antigens presented by pathogens while remaining unresponsive to similar antigens on host tissues.
TCR Therapy | Overview
The pre-selection repertoire of T-cell receptors (TCRs) is shaped by both genetic and epigenetic factors. According to the accessibility hypothesis, gene segments must be accessible to recombination machinery, involving processes such as subnuclear relocation, DNA methylation, chromatin remodeling, histone modification, and germline transcription.
Although the activation of the 3' proximal region of antigen receptor loci is well understood, the mechanisms controlling the accessibility and activation of the 5' V region remain unclear. Research has shown that V genes in the immunoglobulin heavy chain locus recombine at different frequencies even when they have equal accessibility, implying that similar biases might also be present in TCR loci.
Recent analyses reveal that the frequency of out-of-frame TCR-a sequences is affected by the usage of V and J segments, indicating a genetic influence. Additionally, recombination bias causes a notable overlap in the TCR-B chain repertoire among syngeneic mice before thymic selection, highlighting a predisposition in the TCR repertoire composition that is significantly shaped by V(D)J recombination.
The TCR receptor complex is an octameric structure with three dimeric signaling modules: CD247 ζ/ζ, CD3δ/ε, and CD3Y/ε, and variable a and B chains. Ionizable residues in the transmembrane domains stabilize the complex, while signaling molecules are essential due to the TCR's short cytoplasmic tail.
TCRs exhibit low affinity for peptide/MHC ligands (dissociation constants of 1-100 μM); but T-cells maintain high antigen specificity and sensitivity through the formation of TCR microclusters, enhancing antigen recognition via an avidity-based mechanism.
Antigen-experienced T-cells (effector and memory) show increased sensitivity and require fewer costimulatory signals and lower antigen concentrations compared to naive T-cells, achieved through functional avidity maturation without changes in affinity.
Major players in the global TCR therapy market:
Gilead Sciences, a biopharmaceutical company established in 1987 in Foster City, California, specializes in researching, developing, and marketing medicines for life-threatening diseases. With over 7,000 employees spread across offices on six continents, Gilead focuses on therapeutic areas such as HIV/AIDS, hepatitis B and C, influenza, COVID-19, liver diseases, hematology, and oncology. Some of their notable products include Biktarvy, Complera, Descovy, Emtriva, Genvoya, Odefsey, Stribild, and Sunlenca.
KITE-439, developed by Gilead Sciences, is a T lymphocyte replacement therapy. Preclinical studies have shown efficacy with MHC class I-restricted T-cell receptor (TCR)-engineered T-cells targeting the E7 protein on HPV16-positive tumor cells. The drug is currently in Phase II clinical trials for the treatment of both solid and hematological malignancies.
We Offer 10% Free Customization and 3 Months Analyst Support
Frequently Asked Questions (FAQs):
A: TCR therapy works by extracting T-cells from a patient, genetically engineering them to express specific T-cell receptors (TCRs) that can recognize cancer-associated antigens, and then reinfusing these modified T-cells back into the patient. These engineered T-cells then target and kill cancer cells displaying the specific antigen.
A: Common risks and side effects of TCR therapy include cytokine release syndrome (CRS), neurotoxicity, and potential off-target effects that might damage healthy tissues. These side effects necessitate careful monitoring and management during and after treatment.
A: While both TCR and CAR-T therapies involve genetically modifying T-cells, they differ in their target recognition mechanisms. CAR-T-cells recognize surface antigens on cancer cells through chimeric antigen receptors, whereas TCR therapy targets intracellular antigens presented by MHC molecules. This allows TCR therapy to target a broader range of cancer-associated proteins.