Cited by 13Cancer, Hypoxia, and MetabolismAngiogenesis and VEGF in CancerCancer Cells and Metastasis

Hypoxic microenvironment in cancer: role in metabolic reprogramming

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Sureka, Niti, Maheshwari, Rashi, Agravat, Amit, Singhal, Shweta, Zaman, Shamsuz, Rishi, Bhavika, Siraj, Fouzia, Zaheer, Sufian +1 more·2026·Frontiers in Oncology

Abstract

Hypoxia, a defining hallmark of solid tumors, arises from structurally and functionally abnormal vasculature, rapid cellular proliferation, and impaired perfusion, resulting in chronic and cycling oxygen deprivation within the tumor massThe hypoxic tumor microenvironment orchestrates extensive molecular reprogramming primarily through stabilization and activation of hypoxia-inducible factors (HIF-1α and HIF-2α), which regulate broad transcriptional networks governing metabolism, angiogenesis, stemness, invasion, and immune modulation. Under low oxygen tension, tumor cells shift toward aerobic glycolysis, enhance glutamine utilization, promote lipid synthesis and storage, suppress mitochondrial oxidative phosphorylation, and fine-tune redox balance through coordinated regulation of ROS-generating and antioxidant systems. These adaptations not only sustain proliferation and survival under metabolic stress but also facilitate epithelial–mesenchymal transition, extracellular matrix remodeling, and metastatic dissemination. Beyond malignant cells, hypoxia reprograms stromal compartments—including cancer-associated fibroblasts, endothelial cells, tumor-associated macrophages, and myeloid-derived suppressor cells—thereby establishing a metabolically cooperative, angiogenic, and profoundly immunosuppressive microenvironment. Hypoxia-induced acidosis, lactate accumulation, and HIF-driven cytokine signaling further impair cytotoxic T-cell and NK-cell activity, contributing to immune escape and resistance to radiotherapy, chemotherapy, and immunotherapy. Emerging evidence from single-cell multi-omics, spatial transcriptomics, metabolic imaging, and early-phase clinical trials targeting HIF signaling, angiogenic pathways, and metabolic enzymes has uncovered actionable vulnerabilities in hypoxia-driven malignancies. This review synthesizes the mechanistic foundations of hypoxia-induced metabolic reprogramming, its role in tumor progression and therapeutic resistance, and discusses innovative strategies aimed at exploiting hypoxia-associated metabolic dependencies to advance precision oncology.

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Authors
Sureka, N., Maheshwari, R., Agravat, A., Singhal, S., Zaman, S., Rishi, B., Siraj, F., Zaheer, S., & Misra, A.
Affiliations
  • Safdarjang Hospital (IN)
  • Department of Pathology, Pandit Deendayal Upadhyay (PDU) Medical College
  • Indian Council of Medical Research (IN)
  • National Institute of Child Health (PK)
Corresponding author
  • Zaheer, Sufian
  • Misra, Aroonima
Venue
Frontiers in Oncology
Published
2026-03-31
Volume
16
Pages
1771365-1771365
ISSN
2234-943X (ISSN-L)
OpenAlex
W7143706570
Cited by
11
References
313
Citations by year
2026: 11
FWCI
9.23
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
tumor hypoxia, hypoxic tumor microenvironment, metabolic reprogramming, hypoxia-inducible factor, HIF-1α, HIF-2α, aerobic glycolysis, glutamine metabolism, lipid metabolism, redox homeostasis, reactive oxygen species, epithelial-mesenchymal transition, extracellular matrix remodeling, metastasis, cancer-associated fibroblasts, tumor-associated macrophages, myeloid-derived suppressor cells, tumor immunosuppression, immune evasion, treatment resistance, HIF-targeted therapy, precision oncology

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