Metabo-oncology News
Cancer cells harness insulin for performance enhancement
Endogenous hyperinsulinemia has been proposed as one of the causal factors contributing to the association between obesity, diabetes, and increased cancer risk and mortality. Previous studies have examined the mechanisms through which hyperinsulinemia promotes cancer progression, but it is not understood how hyperinsulinemia contributes to cancer incidence. Disruption of cell polarity is an early event […]
Decellularized extracellular matrix scaffolds identify full-length collagen VI as a driver of breast cancer cell invasion in obesity and metastasis
We show that decellularized ECM from tumor-bearing and obese mammary glands drives TNBC cell invasion. Proteomics of the ECM from the obese mammary gland led us to identify full-length collagen VI as a novel driver of TNBC cell invasion whose abundance in tumor stroma increases with body mass index in human TNBC patients. Last, we […]
Insulin–PI3K signalling: an evolutionarily insulated metabolic driver of cancer
…insulin signaling can be seen as enabling tumor development by providing a mechanism for PI3K activation and enhanced glucose uptake. This idea is supported by studies showing enhanced tumor development in humans and mice with hyperinsulinemia, and reduced tumor development in states of reduced insulin levels.
Diabetes Increases Breast Cancer Mortality Risk
Women with breast cancer and diabetes have a greater risk for all-cause and cancer-specific mortality and are less likely to receive chemotherapy and radiotherapy compared with women with breast cancer alone, according to researchers.
40 percent of US cancers linked to excess weight
About 40 percent of all cancers in the United States -- more than 630,000 in all -- are associated with excess weight, health officials said Tuesday, urging a renewed focus on prevention. The rates of these overweight- and obesity-related cancers are rising, in contrast to the overall rate of new cancer cases which has dropped since the 1990s.
ESMO 2017 Press Release: Abdominal Fat a Key Cancer Driver for Postmenopausal Women
"When assessing cancer risk, body mass index (BMI) and fat percentage may not be adequate measures as they fail to assess the distribution of fat mass," she explained. "Avoiding central obesity may confer the best protection."
Throwing oil into the flames
Obesity has become one of the leading preventable causes of cancer. Yet, the mechanisms of how obesity and associated systemic inflammation can promote cancer progression remain poorly understood. In a new study, researchers found that the cytokines interleukin 5 (IL-5) and granulocyte macrophage colony-stimulating factor (GM-CSF) are induced in obesity and, in obese mice, this leads to lung neutrophilia and supports breast cancer metastasis to the lung. Quail, Olson et al. used mouse models of obesity, induced by a high-fat diet (diet-induced obesity, DIO mice) or leptin deficiency (ob/ ob mice), to study how inflammation in obesity is linked to breast cancer metastasis.
Type 2 Diabetes Mellitus and Cancer: The Role of Pharmacotherapy
Type 2 diabetes mellitus (T2DM) is becoming increasingly prevalent worldwide. Epidemiologic data suggest that T2DM is associated with an increased incidence and mortality from many cancers. The purpose of this review is to discuss the links between diabetes and cancer, the effects of various antidiabetic medications on cancer incidence and mortality, and the effects of anticancer therapies on diabetes.
Obesity and Cancer Mechanisms: Tumor Microenvironment and Inflammation
There is growing evidence that inflammation is a central and reversible mechanism through which obesity promotes cancer risk and progression.
Obesity and Cancer: Insights for Clinicians
The association of obesity with cancer, increasingly recognized in both lay and medical communities and underscored by the ongoing obesity epidemic, has stimulated a large body of research and led to calls for programs to minimize any potential impact of obesity on cancer